Is there a way to know is car has a bad head gasket

Head Gasket

• Coolant Loss: a significant drop is a red flag. If you’re constantly topping off your coolant but can’t find any leaks, it’s nearly always a sign that you’re burning coolant.
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  White Smoke from the Tailpipe: Some white smoke from the exhaust pipe of a cold engine is normal.  However, if your exhaust starts spewing thick, white smoke after the engine has warmed up, it generally means that coolant is entering the combustion chamber — one of the main signs of a failed head gasket.
• Engine knock: Blown head gaskets can lead to poor compression. Some head gasket leaks can contribute to combustion chamber deposits that can cause pre-ignition and an audible knocking sound. Ignition problems may also present themselves as unusual pinging or thudding sounds coming from your engine bay.
• Milky Oil: Check your engine’s oil. If it looks like a milkshake (of any delicious variety), it’s generally a sign of coolant contamination, possibly due to a blown head gasket.
• Overheating: If your temperature gauge consistently hits the red zone, it may be due to a bad head gasket.

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